baber/WOPTO huggingface dataset:
Patent GB-617150-A (GB)
Title: A new or improved expansible plug
IPC: F16B13/12
Filed: 1944-09-08
Abstract: 617,150. Wall &c. plugs. COLTON, L. H. Sept. 8, 1944. No. 17226. Addition to 565,003. [Class 89 (i)] Expansible plugs, according to the parent Specification, for use in wood, brickwork, cement, concrete, plastic substances, and tarmac, &c., have the bore extending from one end only as far as a conical surface. Longitudinal slits extend from the other end at least as far as the conical surface to divide this end into a number of fingers. A hexagonal, &c. plug 1, Fig. 1, has a tapped bore terminating in a conical end 3 and the slits 4 extend as far as the conical end of the bore. The slit end may be solid apart from the slits or may have a bore of less diameter than that of the main body of the plug according to the degree of expansion required. To facilitate expansion an external groove may be turned at the end of the slit portion. The plug is expanded by a conical ended pin 6 that may be hammered into place or may be forced home by a screw 7 with which it may be integral. In some cases the hole in the cement &c.may be lined with a wooden bush that may be split. The expansion may be effected by a screwed tool 8, Fig. 4, having a conical end 8a followed by a fluted part 8c that cuts a thread in the expanded end. After expansion the plug 8 is removed and an ordinary bolt may then be screwed right up to the expanded end of the plug.
Patent GB-1204389-A (GB)
Title: Thermostatic apparatus
IPC: F24F11/00
Filed: 1968-04-10
Abstract: 1,204,389. Automatic temperature control systems. TEXAS INSTRUMENTS Inc. April 10, 1968 [July 14, 1967], No.17228/68. Heading G3R. A temperature control system has a space temperature sensor additionally in a variable heat exchange relationship with a constant temperature element and the sensor may have a further thermal relationship with another element sensitive to humidity causing a control temperature change in the opposite direction.  A space temperature sensor TH1 of P.T.C. or N.T.C. type and having a sharp transition characteristic is also influenced by a heater H1 which may comprise a mass of steep slope P.T.C. semi-conductor material having an abrupt transistion temperature above which the resistance of the material rises relatively abruptly, thus making it self-regulating at a constant temperature. The sensor is mounted on a cord and pulley arrangement so that the influence of the heater H1 may be varied and hence varying the temperature at which the space is maintained by a furnace or air conditioner (not shown). In addition the sensor TH1 may also be influenced by a humidity sensor 50 comprising a tubular mandle 51 upon which is wrapped a porous matrix 53 e.g. cloth, which is impregnated with lithium chloride salts and a pair of wires 55, 57 wrapped around the material 53 in the form of interlaced helixes, sensor 50 rising to a temperature dependent upon the humidity, and influences sensor TH1 so that an increase in humidity de - creases the space temperature. Sensor TH1 may be fixed and the heater H1 relatively movable, or other means of varying the thermal coupling such as variable thermal barriers may be used.
Patent GB-102507-A (GB)
Title: Improvements relating to the Manufacture of Refractory Materials and to their use in Manufacture.
Inventor: LECESNE NOEL
IPC: C04B38/06
Filed: 1916-12-02
Abstract: 102,507. Lecesne, N. April 29, 1914, [Convention date]. Alumina.-Corundum is obtained by burning with compressed air in a shaft furnace an intimate mixture of bauxite and anthracite or other fuel, so as to form and immediately burn aluminium carbide, the introduction of compressed air being continued after the fusion to burn out the carbon. Preferably, crude bauxite containing its natural moisture is mixed with an anthracite without grinding and charged direct into the furnace, disintegration of the charge and intimate mixing of the materials occurring automatically in the furnace. Water may be added to the bauxite if necessary to ensure this disintegration in the furnace. A temperature such as that at which alumino-thermic mixtures burn is attained, silica and iron being volatilized from the charge; although the product may contain some particles of silica and iron or magnetic iron oxide. The furnace operation may be of limited duration, for instance three hours, in order to leave a small quantity of finely-divided carbon in the product. The product, after cooling, is ground, mixed with an agglomerant, for instance hydrated bauxite, or a mixture of quartz, quicklime, and water, moulded and baked to form refractory bricks, crucibles, grinding-wheels, &c. The carbon remaining in the corundum may furnish sufficient additional heat during the baking to fuse the added raw bauxite, forming a solid block.
Patent GB-273734-A (GB)
Title: Improvements in and relating to sound reproducing apparatus and the like
IPC: G03B31/00
Filed: 1927-06-30
Abstract: 273,734. De Forest Phonofilms, Ltd., (Assignees of Forest, L. de, and Reynolds, J. L.). June 30, 1926, [Convention date]. Amplifying systems. - In the reproduction of speech or music by optical means, provision is, made for controlling the volume or quality, or both the volume and quality, of the sounds by partial suppression of the low tones in order to suit the particular auditorium and to compensate for lag in the photoelectric cell employed in the reproduction, the control being effected at a convenient position in the auditorium. As applied in the simultaneous reproduction of sound and pictures, the sound reproducing attachment with amplifier is conveniently arranged in the picture projection box, as described in Specification 214,938, [Class 40 (ii), Phonographs &c.], and the volume of the sound reproduced by a loud speaker suitably arranged near the picture screen is controlled by a variable resistance inserted in the leads to the loud speaker in position to be adjusted by an authorized person in the auditorium. A tone control device is also provided for partial suppression of the low tones. As shown the amplifying circuit from the photoelectric cell 20 is provided in connection with a transformer arranged between two thermionic valves 26, 27 with a control circuit comprising an inductance 28 and a variable resistance 30 in series, across the primary 31 of the transformer, and with a variable capacity 29 in shunt across the inductance. A potentiometer 33 across the secondary 32 is connected with the input of the valve 27. the output of which is led to the coils 36 of the loud speaker 10. An input resistance 22 is connected across the leads from the photoelectric cell 20 to the valve 26, a condenser 23 and grid leak 24 with bias battery 25 being also provided. The quality of the sound, by shunting off more or less or the low tones, can be regulated by adjusting any one of the elements 28, 29, 30 of the control circuit. This is preferably arranged in the amplifier casing accommodated in the projection box, and is initially adjusted to suit the acoustic properties of the auditorium, but it may be arranged in other positions of the amplifier circuit, as for example beyond the last valve and located in the leads to the loud speaker for control by an authorized person. The adjustment also compensates for the lag of the cell 20 at high frequencies. Reference has been directed by the Comptroller to Specification 248,821.
Patent GB-152413-A (GB)
Title: Improvements in carburetters for internal combustion engines
IPC: F02M17/28
Filed: 1919-07-12
Abstract: 152,413. Winder, J. S. July 12, 1919. Vaporizers, external.-Relates to surface carburettors of the kind described in Specification 110,944, and consists in providing one or more annular or solid wicks projecting above or into a fuel-distributing chamber, situated between a vertically-operated needle fuel-valve' and the mixing-chamber, the opening of the fuel valve being varied to suit the opening of the induction valve by a lever connecting these valves. Fig. 2 shows a single annular wick A surrounded by a heating-jacket H and projecting at the top into a chamber B supplied with fuel through a needle valve F, which is opened by the pressure of fuel or by a spring. The fuel passes through holes b to the wick and flows down by gravity to meet an upward current of air. A central tube D with diaphram d has ports d<1> for admitting air, and ports d<1> controlled by a sliding sleeve-valve E for throttling the supply of carburetted air to the engine. The upper part of the needle valve F bears against an adjustable screw g, Fig. 1, on a lever G to limit the rise of the valve F in accordance with the position of the valve E. Fig. 4 shows four annular wicks A arranged in casings so as to receive fuel from a chamber B through holes b, the air passing upwards through the passages D in the wicks. The supply of fuel to the chamber B is controlled by a needle valve F connected to the sliding throttle-valve E. Gauze screens d<2>, d<3> are fitted at each end of the wick to prevent back-fire. Fig. 12 shows an arrangement in which fuel flows downwards from the chamber B through a number of solid circular wicks A to a chamber B<1>, from which it tends also to rise bv capillary action. Air passes over the wicks and through a gauze shield c to the throttle valve E, this valve being connected to the needle valve controlling the fuel supply to chamber B.
Patent GB-480588-A (GB)
Title: Improvements in flushing apparatus
IPC: E03D1/30
Filed: 1936-06-24
Abstract: 480,588. Valve - discharge water - waste-preventers. KELLY, C. A. F. June 24, 1936, No. 17521. [Class 26] In a valve-discharge water-waste-preventer, the valve comprises a free ball 1 raised by a member 11 having a head 10 normally closing an auxiliary outlet 8 which is opened before the ball is lifted. The member 11 is mounted in a guide 12 in the discharge pipe and is operated by a push 15 through a pivoted sector 13. The pipe 3 is vented at 4 and is straight or gently curved. The apparatus may be used in connection with an air-tight cistern, in which case the auxiliary opening serves to relieve the pressure on the ball when the latter is about to be lifted.
Patent GB-568983-A (GB)
Title: Improvements in or relating to fluid feeding apparatus for conducting a fluid onto arotatable body
IPC: B64D15/16
Filed: 1943-10-25
Abstract: 568,983. De - icing propeller blades. GOODRICH CO., B. F. Oct. 25, 1943, No. 17570. Convention date, Sept. 22, 1942. [Class 114] De-icing fluid is fed onto each blade 11 of a variable-pitch propeller during pitch adjustment thereof by means of a pocketed feeding element 24 mounted on the blade root 16 and having an elongated opening 25 to receive a fluid delivery nozzle 26 and means for substantially closing said opening against loss of fluid by splashing. A pipe supported on the engine casing supplies the fluid to a slinger ring 23 which is secured to the rear hub portion 12b and is provided with a nozzle 26 for each blade 11. The feeding elements 24 may be made of reinforced rubber, leather, oil-impregnated fabric, or like flexible material, and each may comprise a rectangular base 28 and a diagonally-disposed hollow part 27. The interior wall 29 opposite the opening 25 leads the fluid by centrifugal action towards outlets 31 leading to a recess 38 in the base 28, which recess fits over a shoe 36 with grooves 37 for conducting the fluid along the leading edge of the blade 11. The feeding element is secured to the root 16 by a rubber cement, and in the bent condition the tapered margin 33 bends inwardly as at 33a around the nozzle and closes the slot 25.
Patent GB-1160643-A (GB)
Title: Variable Lead Device for Line Tracers
Inventor: LAYDEN LAWRENCE M
IPC: B23Q35/40
Filed: 1967-04-17
Abstract: 1,160,643. Cutting by fusion. AIR REDUCTION CO. Inc. 17 April, 1967 [18 April, 1966], No. 17617/67. Heading B3V. [Also in Divisions G1 and G3] A line tracing apparatus comprises a line sensing device operating with a lead distance and a selector controlling the tracing speed and varying the lead distance automatically as a function of the training speed. As shown, Fig. 3, an optical line follower 60 is moved around a line on a template S by a wheel 30 driven at a predetermined speed by a motor 40 and steered by a motor 110 which simultaneously aligns the follower 60 through gearing 22, 48, 52. The position of the follower relative to the line on the template is detected by cadmium sulphide light sensitive elements 154, 156 responsive through a lens 65, to the light reflected from the template. The scanning lead is indicated by A and the elements 154, 156 are proportionally displaced by a distance RA by rotation of a screw 160. The screw is rotated in dependence on the tracing speed as set by manual adjustment of a speed selector 170 for the motor 40 through a servo link comprising a servo 164 responsive to a comparison of selected speed with the signal from an odometer 166 coupled to a motor 62 driving the screw 160, to derive a signal for controlling the motor 62 through a controller 168 whereby the lead A is maintained in correspondence with the selected tracing speed. In a modification, Fig. 7, the line on the template is magnetic and is followed in dependence on the output of coils 204, the lead A being controlled by the movement, through the screw 160, of a rod 202 pivoted about a spherical bearing 208 and slidable in a sleeve 200. It is stated that a knob 172 of the speed selector 170 may be connected to the lead screw 160 by a direct mechanical linkage. The line or edge scanned may be replaced by an elongated shadow. In a guidance system for a metal-cutting torch, a carriage on which the line follower is mounted is connected to a stationary member by pentographic arms and carries on a rigid bracket a torch directed downwardly to propel its flame against a workpiece. Reference is made to the relationship between lead and cutting speed for oxy-thermal flame cutting equipment and for electric arc plasma cutting machines.
Patent GB-1262624-A (GB)
Title: Improvements in and relating to pulse generators
IPC: H02M7/46
Filed: 1970-04-14
Abstract: 1,262,624. Pulse circuits. RICOH K.K. 14 April, 1970 [23 April, 1969], No. 17631/70. Headings H3P and H3T. A pulse generator comprises the circuit shown, in which A.C. is applied to terminals 1, 2 and devices D1, D2 are switching elements which breakdown at a predetermined voltage, e.g. discharge tubes or semi-conductors having a negative resistance characteristic. Several of these may be connected in series in each branch to increase the operating voltage. Capacitor C is charged via R until Dl or D2 breaks down, which occurs on alternate halfcycles, so discharging C and producing an output pulse at 3, 4. Rectifiers Re1, Re2 avoid the necessity of matching the breakdown voltages of D1, D2.
Patent GB-108263-A (GB)
Title: Improvements in Pocket Wallets, Letter Cases, and the like.
Inventor: BAMLET WILLIAM HENRY CARLISLE
IPC: A45C1/06
Filed: 1916-12-08
Abstract: 108,263. Bamlet, W. H. C. Dec. 8, 1916. Wallets. - A pocket wallet for holding a cheque book, letters, bank-notes, stamps, &c. comprises a main portion K, which is formed integrally with flaps e, f and has hinged to it a flap d provided with tapes t for holding bank-notes, &c. The flap f has pockets a, b, c, and is adapted to fold over the flap d when the latter is in its closed position over the part K. Pockets also may be provided on the closing-flap e, which carries a fastening-device.
Patent GB-738701-A (GB)
Title: Improvements in and relating to display and like devices
IPC: G09F7/02
Filed: 1953-06-25
Abstract: 738,701. Signs. HORTON, W. G. June 4, 1954 [June 25, 1953], No. 17661/53. Class 3 (2). [Also in Group XXXVIII] A sheet, strip or the like of thick paper, thin card or similar material adapted to have typewritten or like indications made on a surface thereof has defined thereon by boundaries constituted by weakened portions of the sheet material a plurality of similarly shaped and distinct areas including projecting lugs, for the production of lugged indicators to be mounted upon slotted indicating panels such as those described in Specification 465,800. The indicators 8 may be of any shape and each indicator may be separated from the next by a perforated line 18. The relative position of the lugs 9, 10 is determined by the position of the slots in the panel. The indicators may be mounted on flexible sheets having slots.
Patent GB-562962-A (GB)
Title: Improvements in the separation of vegetable pigments
Filed: 1942-12-12
Abstract: In the extraction or concentration of vegetable colouring-matters, such as chlorophyll, xanthophyll, carotene and other provitamins from solutions containing them, the solution is treated by chromatographic adsorption on bone meal with subsequent elution.  One or more of the coloured materials may remain in the solution.  Preferably, the bone meal is first purified by the removal of gelatin, oil and sterols. In examples: (1) fresh grass is ground with sand and sodium sulphate and extracted with petrol, the solution being passed through purified bone meal to adsorb the chlorophyll; carotene remains in the solution, and the chlorophyll is eluted from the adsorbate with ethers, alcohols or acetone; alternatively, the grass is extracted with a mixture of petrol acetone and ether, or two of them, the solution evaporated and taken up with petrol and then chromatographed as before; (2) dried carrots are ground with sand and extracted with benzene, the solid from the extract being dissolved in petrol and chromatographed with purified bone meal; a  and b  carotene appear in the filtrate, and chlorophyll and xanthophyll are eluted with acetone, being separated by conversion of the chlorophyll to potassium chlorophyllin; (3) dried grass is extracted with a mixture of petrol, acetone and ether (3 : 1 : 1), the solvent evaporated and the residue refluxed with methyl alcoholic potash; after evaporating the methyl alcohol, the residue is treated with ether, the insoluble chlorophyllin filtered off and the solution chromatographed with purified bone meal, b  carotene and xanthophyll being washed out with ether, the solution evaporated and the residue taken up with petrol and again chromatographed with the bone meal, from which b  carotene is eluted with petrol and xanthophyll with acetone; (4) grass is extracted with methanol, the solution being chromatographed with bone meal; flavins are eluted with water, pyridine or aqueous methanol; (5) dried grass is extracted with petrol chromatographed with purified bone meal and chlorophyll is eluted with acetone.
Patent GB-644196-A (GB)
Title: Improvements in or relating to paper-filing apparatus
IPC: B42F15/00
Filed: 1948-07-01
Abstract: 644,196. Filing papers. ROCKWELLWABASH CO. (1909), Ltd., and MOORE, B. July 1, 1948, No. 17733. [Class 146 (i)] In a suspension filing apparatus in which suspension bars A for pocket members C slide on rails D, the bars A are each provided with at least two spaced hook members A<SP>1</SP> on each side, each hook being formed with a constriction A3 above the base A<SP>4</SP> of the hook and the free edges of the pocket members C carry loops B adapted to engage the hooks A<SP>1</SP>, each loop B having the part B3 which engages a hook formed of non-circular cross-section with the horizontal dimension of the part B3 in its normal position greater than its vertical dimension so that it cannot pass the constriction A3 in the hook A<SP>1</SP> unless the loop B is rocked out of its normal substantially vertical position. The loops B are formed from a length of wire, the straight part B<SP>1</SP> between the loops and turned down ends B<SP>2</SP> being secured in the turned down edge of the pocket C as by adhesive and the part B3 being formed by flattening the wire. The bars A are formed from a blank of metal from which the hooks A<SP>1</SP> are pressed out and the outer edges looped so that when folded in half a hollow space A2 is formed. Slots AS at each end are cut to form hooks to slide on rails D, the tongues A<SP>8</SP> and A9 being clamped together to hold the halves of the bar A together.
Patent GB-613157-A (GB)
Title: Improvements in apparatus for mooring flying boats
IPC: B64F1/22
Filed: 1946-06-13
Abstract: 613,157. Mooring flying boats. SAUNDERSROE, Ltd., and GOUGE, A. June 13, 1946, Nos. 17738/46 and 7863/47. [Class 4] Apparatus for mooring a flying boat comprises a dock 10 to receive the boat and a cable 13 which can be engaged by the boat between supporting marker buoys 20, 21 and is led from a winch 16 on the dock to a pulley on a buoy 18 at a distance from the dock and returned submerged to another winch 19 on the dock, winch 16 being used to wind up the cable with the boat engaged and lead the boat into a bay 11 in the dock. Should cable 13 be moved out of line with the bay 11, warping cables 25, 26 passing through pulleys on buoys 29, 30 can be used by means of winches 33, 34 to realign the cable 13 with the bay. Specifications 575,723 and 575,919 are referred to.
Patent GB-1268881-A (GB)
Title: Improvements in the production of urethane foams
IPC: C08G18/16
Filed: 1969-04-08
Abstract: 1,268,881. Polyurethane foam. UNION CARBIDE CORP. 8 April, 1969 [4 April, 1968], No. 17760/69. Addition to 1,114,428. Headings C3C and C3R. Polyurethane foam is prepared by reacting and foaming a mixture of: (I) a polyester resin having at least two OH groups per molecule and an OH No. of 45-150; (II) a polyisocyanate; (III) a blowing agent; (IV) a foam stabilizing amount of a siloxane-oxyalkylene block copolymer, M.W. 780 to <3000 having a siloxane content of 14-42% by wt. and of which the oxyalkylene portion has an oxyethylene content of at least 75% by wt.; the siloxane portion consists essentially of groups R b SiO 4-b/2  in which R is selected from monovalent hydrocarbon groups and divalent organic groups, at least one of the "R" groups in the siloxane portion being divalent and each of the divalent groups linking the siloxane portion to the oxyalkylene "block" of the copolymer; b is 1-3; and (V) a highly active catalyst for the production of polyurethanes, i.e. one which has a catalytic activity greater than that of N-ethylmorpholine, e.g. triethylenediamine or organotin compounds. Alternatively V may be any polyurethane catalyst in which case IV must have a siloxane content of 20-33%. V may be prepared in similar manner to that described in the parent Specification (which is limited to organopolysiloxane - polyoxyalkylene copolymers of M.W. 3000-17,000).